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  <title>4D Functions (PDO_4D)</title>

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  <h1 class="title">4D Functions (PDO_4D)</h1>
  

  <div class="partintro">
   <div class="section" id="pdo-4d.intro">
   <h2 class="title">简介</h2>
   <div class="warning"><strong class="warning">Warning</strong><p class="simpara">此扩展是<em class="emphasis">实验性 </em>的。
此扩展的表象，包括其函数名称以及其他此扩展的相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本扩展风险自担 。</p></div>
    <p class="para">
     PDO_4D is a driver that implements the 
     <a href="intro.pdo.html" class="link">PHP Data Objects (PDO)</a>  interface
     to enable access from PHP to 4D databases.
    </p>
    <p class="para">
     4D is an integrated platform that speeds and simplifies the development
     and deployment of business applications, used in over 70 countries, by
     a community of thousands of developers and vertical solution providers,
     with millions of end-users worldwide.
    </p>
    <p class="para">
     By offering a suite of integrated tools such as an ANSI SQL relational
     and transactional database, a graphical development environment, a 
     fourth-generation language with over 1000 high-level commands, a 
     built-in HTTP server, application server, etc., 4D facilitates the
     creation and maintenance of applications from one to hundreds of 
     simultaneous users, whether on Windows, Mac or from any Web client.
    </p>
    <p class="para">
     4D is also an open platform, offering a complete API for plug-in 
     creation, including various connectors that allow it to act as a 
     back-end or front-end for many environments (Oracle via OCI, SOAP
     client or server, Flex data source, all ODBC databases, XML over 
     HTTP, etc.)
    </p>
    <p class="para">
     In addition to the ability to interact with 4D applications across 
     Web Services, 4D databases can now be directly accessed using the 
     PDO_4D driver.
    </p>
    <p class="para">
     More details about the 4D development environment on <a href="http://www.4d.com/" class="link external">&raquo;&nbsp;http://www.4d.com/</a>.
    </p>
    <p class="para">
     PDO_4D is known to work with 4D versions 12 beta and up, for Mac OS X 
     and Windows. Older plat-forms may work, but are unsupported.
    </p>
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 <h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="ref.pdo-4d.connection.html">PDO_4D DSN</a> — Connecting to 4D SQL server</li><li><a href="pdo-4d.constants.html">Constants for PDO_4D</a> — Constants for PDO_4D</li><li><a href="pdo-4d.sqltypes.html">SQL types with PDO_4D and PHP</a> — SQL types with PDO_4D and PHP</li><li><a href="ref.pdo-4d.sql4d.html">SQL acceptable by 4D</a> — PDO and SQL 4D</li><li><a href="pdo-4d.examples.html">Examples with PDO_4D</a> — Examples PDO_4D</li></ul>
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